and use it to send and check for heartbeats over any transport.
Caller must supply a reset proc which is called when heartbeat hasn't
been received in too long. No changes required to comms protocol, but
that means the heartbeat interval is fixed at compile time: can't be
negotiated, and the two ends had better agree. Currently tested with
linux host and PalmOS guest, where only the first heartbeat failure is
recovered from. So there's some debugging to be done still.
l2cap. Works with two caveats: assumes l2cap-style complete packets
(no framing), and has problems with linux sdp system's tendency to
retain records long after sessions are closed.
that all connectivity was with relay and over streaming sockets (since
BT is using l2cap's datagram-style sockets.) With this checkin, a full
robot-vs-robot game is possible with palm as host and linux as client.
Linux as host isn't started yet.
